CALIFORNIA BRICKS
Brand name: ARCOFRAX/99-7D
Company: American Refractories Co.
Location: Los Angeles, CA
Years: 1927-1949
Type: Fire brick
Description: Brand name and number impressed into one of the sides, 99-7D beneath the brand name.
Source: California Division of Mines Bulletins 101, 1927; California Division of Mines Bulletin 128, 1943;
California Division of Mines Report, v. 47, no. 2, 1951.
Comments or questions are welcomed.
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